2772473661 has 12 divisors (see below), whose sum is σ = 4072560960. Its totient is φ = 1816988040.

The previous prime is 2772473657. The next prime is 2772473663. The reversal of 2772473661 is 1663742772.

It is not a de Polignac number, because 2772473661 - 2² = 2772473657 is a prime.

It is a super-2 number, since 2×2772473661² = 15373220401877485842, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772473663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2610085 + ... + 2611146.

It is an arithmetic number, because the mean of its divisors is an integer number (339380080).

Almost surely, 2^2772473661 is an apocalyptic number.

It is an amenable number.

2772473661 is a deficient number, since it is larger than the sum of its proper divisors (1300087299).

2772473661 is a wasteful number, since it uses less digits than its factorization.

2772473661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5221296 (or 5221293 counting only the distinct ones).

The product of its digits is 592704, while the sum is 45.

The square root of 2772473661 is about 52654.2843555964. The cubic root of 2772473661 is about 1404.8258056689.

The spelling of 2772473661 in words is "two billion, seven hundred seventy-two million, four hundred seventy-three thousand, six hundred sixty-one".